Teledyne LeCroy PXA125 - Manual (Page 70)

User Manual PXA125
3-56 ArbConnection
CAUTION
By selecting an external reference you are
disabling the internal reference circuit. If you do
not have a 10 MHz reference connected to the
instrument, the output will generate erroneous
frequencies.
Figure 3-34. The Standard Waveforms Panel
Waveforms The Waveforms group lets you select standard functions and modify
their associated parameters. You can select any of nine standard
wave shapes and the PXA125 will generate them for you. Select your
standard output waveform by pressing one of the buttons. After you
have made this selection, you’ll be granted access to parameters that
are unique for this function. For example, if you click on the Square
button, the Duty Cycle parameter will be available for modification.
Likewise, if you select the pulse shape, the fall, high, rise and delay
parameters will be available for modification. Note that by clicking a
button in this group, you are immediately updating the PXA125 output
with this waveform shape.
The Arbitrary &
Sequence Panel The Arbitrary & Sequence panel, as shown in Figure 3-5, is invoked
either by pressing the ARB button on the Panels bar, or clicking on
the Arbitrary or Sequenced Waveforms on the Main Panel. Note that if
you invoke the Arbitrary & Sequence Panel from the Panels menu,
the PXA125 will not change its output type. On the other hand, if you